..Although the increased prevalence of childhood obesity in the United States has been documented, little is known about its incidence. We report here on the national incidence of obesity among elementary-school children...

..We seek to expand on a biopsychosocial framework underlying the etiology of excess preterm birth experienced by African-American women by exploring short inter-pregnancy intervals as a partial explanatory factor...

Maternal smoking during pregnancy and failure of the georgia first grade criterion-referenced competency test

..Because oral contracep tives (OCs) have been the predominant form of highly effective contraceptio in the U.S., it is unknown whether condom use is similarly low with increasingly promoted user-independent methods...

Provision of private, piped water and sewerage connections and directly observed handwashing of mothers in a peri-urban community of Lima, Peru

..We observed between-country differences in both the prevalence of risk factors and the adjusted RR. Further between-country comparisons may lead to important inferences as to the influence of modifiable risk factors contributing to PTB. ..